Hi Mascaratte,
I got that genie moodlet on one of my children sims. I had no genie with me at the time, and I don't at the moment either, which was just as well because I'm doing a Dynasty. The only thing I can think of is that the children in my family went on an excursion to the theatre that day. I only had the one child, the others were teens or older and it was only that child who picked up the moodlet. I suspect that there may have been a genie in the theatre or something like that. The moodlet left me when the timer on it ran out.
I hope that helps you,
Dek